32 results about "Magnetic axis" patented technology

The invention discloses a half-open type thrust magnetic levitation bearing. The bearing comprises a first magnetic ring, a second magnetic ring and a third magnetic ring, wherein the first magnetic ring, the second magnetic ring and the third magnetic ring are arranged in annular and laminating manners so as to form an annular magnetic pole; the magnetic pole of each of the magnetic rings is different from that of the adjacent magnetic ring; a first winding and a second winding of the annular magnetic pole are wound according to a predetermined half-open way, the lower part of the middle magnetic pole is recessed inwards so as to generate a winding space which meets predetermined conditions; and the magnetic pole arranged at the upper end extends, and thus, a complete circle of magnetic pole is formed after splicing. Based on the bearing, continuity and consistency of magnetic field strength of the magnetic poles of the half-opened axial thrust bearing can be basically reserved, and the half-open type thrust magnetic levitation bearing can be applied to high-speed rotation machines; and moreover, a more flexible mounting way can be obtained, particularly to large-size rotation machines.

The present disclosure relates to systems and methods of transmitting wireless vehicle power to vehicle devices with offset sensors. A vehicle includes one or more low-load devices and a plurality of magnetic sensors operable between an offset detection mode for measuring a magnetic field of a power transmitting pad and obtaining magnetic field data and a power reception mode for wirelessly transmitting energy from the power transmitting pad to the one or more low-load devices. The vehicle further includes one or more processors and one or more memory modules including a computer-readable medium storing computer-readable instructions that, when executed by the one or more processors, cause the one or more processors to receive the magnetic field data from the plurality of magnetic sensors and estimate a lateral offset of the plurality of magnetic sensors relative to a magnetic axis of the power transmitting pad.

This invention relates to the technical field of computer input devices, and more particularly to a high-performance magnetic axis keyboard. The key features of this technical solution are: a keyboard body, a magnetic axis, and keycaps. The magnetic axis includes: a housing connected to the keyboard body; a core, vertically mounted within the key axis, the core having a magnet; a Hall effect sensor located in the housing and engaging with the magnet; a floating element vertically mounted in the housing; a spring connected to both the core and the floating element; and an adjusting element located in the housing and connected to the floating element. The adjusting element drives the floating element to adjust its position, thereby controlling the initial compression of the spring. This application enables the adjustment of the magnetic axis keyboard's actuation force, thus solving the problems of limited actuation force and monotonous tactile feedback in magnetic axis keyboards.

The invention belongs to the technical field of magnetic measurement testing, and particularly relates to a magnetic moment coil calibration device and method, which can realize that a magnetic moment coil keeps still in the calibration process, realizes the change of magnetic flux through the change of current, and then calculates the magnetic moment through the variable quantity of the magnetic flux. In the invention, the relative position between the calibrated magnetic moment coil and the standard constant magnetic field coil as the magnetic flux induction coil is always kept fixed in the calibration process, so that the problem that the magnetic axis is difficult to align accurately due to physical movement in the traditional drawing method or overturning method is thoroughly avoided; therefore, the reference alignment precision and reliability of calibration are improved. Magnetic moment coils with different sizes can be matched through the magnetic flux induction coils with different uniform area sizes, and the problem that the pulling or overturning operability of large magnetic moment coils is poor can be avoided.

The utility model relates to the technical field of magnetic shaft keys, in particular to a magnetic shaft key switch with a double-light-guide structure, which comprises a shell and a shaft core structure arranged in the shell in a lifting manner, a spring used for supporting the shaft core structure is arranged in the shell, the shaft core structure comprises a magnet, and the magnet is arranged in the shell. Light guide pieces penetrating through the shell are arranged on the two sides of the shaft core structure. According to the keyboard, the light guide pieces are arranged on the two sides of the keys in the penetrating mode, it is ensured that the key switches and the key caps on the key switches can be fully covered by lamplight, the uniformity and coordination of the lamplight are greatly improved, the lamplight effect of the keyboard is improved, and the use experience of a user is improved. Compared with a traditional single-side light guide structure, the double-light-guide-column structure remarkably enlarges the illumination range of the key, so that light is more uniform and harmonious.

This invention provides a testing device and method for permanent magnet synchronous linear motors, relating to the field of magnetic variable measurement technology. The device includes a housing with a detection mechanism inside. The detection mechanism comprises a first rotating rod and a rotating disk. A rotating plate and a push rod are fixedly connected to the outer surface of the first rotating rod. A locking block is fixedly connected to the outer surface of the rotating plate. A locking groove is formed on the outer surface of the rotating disk. The locking block is slidably connected to the locking groove. This invention's unique multi-angle rotation design allows for multi-dimensional magnetic field data acquisition from irregularly shaped rotors. Analysis of the data allows for precise positioning of the magnetic shaft, ensuring high accuracy and strong adaptability in testing. Furthermore, the automated operation through mechanical linkage significantly improves testing efficiency, realizing the advantage of integrating multi-dimensional detection functions into a single device. This effectively reduces equipment investment and operational complexity, and has significant practical value for performance testing of permanent magnet synchronous linear motors, especially those with irregularly shaped rotors.

The present application relates to the field of input devices, and discloses a key having a magnetic switch. The key having a magnetic switch comprises a base body, a key body, a magnetic block, and a Hall sensor. The base body is hollow to form a mounting position, and the key body is mounted in the mounting position. The magnetic block is provided in the mounting position opposite to the Hall sensor. Magnetic poles of the magnetic block are arranged in the vertical direction to form a magnetic field distribution in the vertical direction. The magnetic block and the key body move synchronously in the vertical direction. When the magnetic block is at an initial position, a lower magnetic pole of the magnetic block horizontally and oppositely cooperates with the Hall sensor, and when the magnetic block moves to a lower stroke stop point, an upper magnetic pole of the magnetic block horizontally and oppositely cooperates with the Hall sensor. According to the key, the Hall sensor is triggered by means of changes in the magnetic poles, so that changes in the magnetic field can be controlled more accurately, thereby ensuring the accuracy and interference resistance of a trigger signal, and reducing the possibility of false triggering and missed triggering.

The application discloses a kind of three-dimensional magnetic field coil magnetic axis orthogonality measurement methods under geomagnetic field environment, belong to magnetometry technical field.The method does not need to construct zero magnetic environment, only utilizes scalar magnetometer and unipolar current source, through the measurement geomagnetic field scalar, single-axis different current under the synthetic magnetic field, the synthetic magnetic field of double-axis simultaneous energization, combine spatial vector mathematical model and equation set elimination method, eliminate the unknown angle interference of geomagnetic field and coil magnetic field, sequentially solve single-axis magnetic field intensity, three-axis magnetic axis angle, finally obtain magnetic axis orthogonality.The application measurement equipment is less, easy to operate, time-consuming is short, uncertainty is small, measurement precision is high, can be widely applied in magnetometry, aerospace, biological medical fields such as three-dimensional magnetic field coil orthogonality verification, calibration and test.

The application relates to a long-service-life anti-nuclear-radiation dustproof magnetic liquid sealing device, and belongs to the technical field of mechanical engineering sealing. The device comprises a shell assembly, a threaded end cover, a clamping hoop assembly, a magnetic guide sleeve assembly, magnetic liquid, four permanent magnets, four magnetic shielding rings, a right bearing, a right pole shoe assembly, a middle pole shoe assembly, a left pole shoe assembly, a left bearing and a syringe. The magnetic liquid is injected between the permanent magnet I, the permanent magnet IV and the shell to form a magnetic liquid static seal, and the magnetic liquid is injected between the permanent magnet I and the permanent magnet IV and the magnetic guide sleeve to form a magnetic liquid dynamic seal, so that the right bearing and the left bearing are prevented from being blocked due to the entry of radioactive powder, and the stable operation of the device is ensured; when the original magnetic liquid is consumed, the locking screw on the shell is taken out, the magnetic liquid is injected into the opened magnetic liquid supplement injection channel through the syringe, under the action of the magnetic field, the injected magnetic liquid re-forms the magnetic liquid seal, the complexity of the maintenance operation is reduced, and the pressure resistance of the device is ensured.

The utility model discloses an environment-friendly treatment device for waste incineration slag, which relates to the field of slag treatment and comprises a shell, the shell comprises a shell body, a magnetic attraction separation mechanism is arranged in the shell body, an eddy current separation mechanism is arranged in front of the magnetic attraction separation mechanism and comprises a rotating shaft, and a separation conveying belt is sleeved on the rotating shaft. A cavity is formed in the rotating shaft, an alternating magnetic shaft is arranged in the cavity, a plurality of permanent magnets with opposite polarities are fixed on the alternating magnetic shaft, and a partition plate is arranged in front of the fifth rotating shaft. The device has the beneficial effects that the eddy current separation mechanism is arranged, an alternating magnetic field generated by rotation of an alternating magnetic shaft is utilized, induced eddy current is generated in non-magnetic metal, then thrust is generated on the non-magnetic metal so that the non-magnetic metal can be separated from slag, and the magnetic separation mechanism separates magnetic metal in the slag in advance; and through cooperation of the magnetic separation mechanism and the eddy current separation mechanism, all metal in the slag can be separated out.

The utility model discloses a kind of magnetic shaft structures that can sound, including base, the upper cover being set on base, the guide core being movably set between base and upper cover, and the elastic member being sleeved between base and guide core, further including the magnet being sleeved on the bottom of the guide core, the lower end of guide core is formed with magnetic installation groove, the middle part of magnetic installation groove is formed with the sound column extending towards base direction;Magnet is overall circular ring column shape, it is embedded in the magnetic installation groove, wherein hollow part is sleeved on the periphery of sound column;The lower end of sound column penetrates through magnet lower end surface and continues to extend downward, and its downward extending portion is impacted base to sound under the action of external force.The utility model provides a kind of magnetic shaft structures that can sound, guide core is impacted on base when being pressed and moved downward, magnet is sleeved on guide core, so as to realize good sound effect in the case where magnet is not damaged and the transmission accuracy is guaranteed, improve the use experience of user.

The wake-up device comprises a keyboard body, a circuit board, an elastic piece and an induction wake-up piece, the keyboard body comprises a key cap, a key shaft and a magnetic piece, the circuit board is provided with a first magnetic field intensity detection piece and a control chip, the keyboard body is connected with one side of the circuit board through the elastic piece, and the induction wake-up piece is arranged on the other side of the circuit board. The magnetic part is close to or far away from the first magnetic field intensity detection part, the first magnetic field intensity detection part generates different detection values according to the magnetic field intensity, and the control chip obtains input data of the keyboard according to the detection values; and the induction awakening piece is electrically connected with the control chip, adopts an acceleration detection piece or a second magnetic field intensity detection piece, and is used for awakening the control chip in a standby state. The induction awakening piece is adopted to detect the use state of the keyboard and awaken the control chip, the situation that the standby power consumption is too large due to the fact that the first magnetic field intensity detection piece needs to output a detection value in real time for the control chip to obtain the input state of the keyboard is avoided, and the standby power consumption is effectively reduced.

The application discloses a rigid support electric turning method for vertical shaft semi-umbrella type hydroelectric generator set, which comprises the following steps: turning preparation, erecting a dial gauge on an operating oil pipe, checking the gap between a rotating part and a fixed part, and turning, wherein the turning method is as follows: constant direct current is supplied to a generator rotor winding, and the stator is sequentially and cyclically supplied with current in the order of A, B and C three phases in an intermittent mode; when the electromagnetic torque generated by the magnetic field is greater than the friction torque of the rotor, the rotor rotates by one electrical angle; until the magnetic axes of the stator and the rotor coincide, the rotor stops rotating, that is, a measuring point is reached; after reading is completed, the current is supplied to another phase of the stator, so that the rotor rotates by one electrical angle again; the above process is repeated until reading of all measuring points is completed. The application only turns the upper guide bearing tile during turning, optimizes the turning process, adopts electric turning driving, reduces operation intensity, and improves the turning efficiency.

The utility model provides a kind of magnetic shaft button, including key shaft, metal magnetic conducting sheet, button shell and two axial magnetization identical magnets.The metal magnetic conducting sheet is fixedly arranged in the upper end of button shell, and the middle hole is opened in it.The one end of the key shaft is set in button shell through the middle hole of the metal magnetic conducting sheet, and the two magnets are symmetrically installed on the pair of outer side surfaces of the shaft body of the key shaft below the metal magnetic conducting sheet.The magnetic shaft button is recovered to the state before being pressed when it is not pressed, by the magnetic force action between the metal magnetic conducting sheet and the two magnets.The magnetic shaft button provided by the utility model realizes reverse linear feedback pressing feeling and pressing recovery mechanism based on the magnetic force action between the metal magnetic conducting sheet and moving magnet, and provides a kind of "from heavy to light, down-dive" light unique feeling with simple structure.

The invention provides a permanent magnet synchronous linear motor testing device and method, and relates to the technical field of magnetic variable measurement, the permanent magnet synchronous linear motor testing device comprises a shell, the shell is internally provided with a detection mechanism, the detection mechanism comprises a first rotating rod and a rotating disc, and the outer surface of the first rotating rod is fixedly connected with a rotating plate and a push rod; the outer surface of the rotating plate is fixedly connected with a clamping block, the outer surface of the rotating disc is provided with a clamping groove, and the clamping block is slidably connected with the clamping groove. Through the unique multi-angle rotating design, multi-dimensional magnetic field data acquisition can be performed on a special-shaped rotor, the position of a magnetic axis can be accurately positioned through analysis, high precision and high adaptability of detection are ensured, and the detection accuracy is improved. And the test efficiency is greatly improved through automatic operation of mechanical linkage, the advantage that a single device integrates a multi-dimensional detection function is realized, the equipment investment and the operation complexity are effectively reduced, and the device has important practical value for performance detection of the permanent magnet synchronous linear motor, especially a special-shaped rotor.

To provide a shift lever device that can be further miniaturized to improve vehicle mounting compatibility. [Solution] A shift lever device 1 comprises a lever block 2 forming the base of the shift lever 21, a magnet disposed on the lever block 2 and rotating about a pivot axis 12 in response to the operation of the shift lever 21 in the X-axis direction, a base block 3 that supports the lever block 2 in a rotatable state, and a magnetic sensor 11 disposed on the base block 3. The magnet is disposed such that the magnetic axis passing through the centers of the N pole and S pole is directed toward the pivot axis 12 regardless of the operation position of the shift lever 21 in the X-axis direction, and the magnetic sensor 11 is positioned intermediately between the magnet and the pivot axis 12 when it is positioned in the direction of the magnetic axis in response to the operation of the shift lever 21, and the magnetic pole surface of the magnet facing the magnetic sensor 11 is convex.

A shift lever device (1) comprises: a lever block (2) that forms the base of a shift lever (21); a magnet that is disposed on the lever block (2) and rotates about a rotation axis (12) in response to the operation of the shift lever (21) in the X-axis direction; a base block (3) that rotatably supports the lever block (2); and a magnetic sensor (11) that is disposed on the base block (3). The magnet is disposed such that, regardless of the operation position of the shift lever (21) in the X-axis direction, the magnetic axis passing through the centers of the N pole and the S pole is oriented in the rotation axis (12). The magnetic sensor (11) is disposed so as to be positioned intermediately between the magnet and the rotation axis (12) when positioned in the direction of the magnetic axis in response to the operation of the shift lever (21). A magnetic pole surface of the magnet facing the magnetic sensor (11) side is formed in a protrusion-shape. Accordingly, design miniaturization can be achieved.

According to the control circuit for reducing the working power consumption of the magnetic axis keyboard, the magnetic field intensity detection piece is used for detecting the magnetic field intensity generated by the magnetic piece in the corresponding keyboard main body and correspondingly outputting an analog detection value, and the time-sharing circuit is controlled through the first control module; the first control module is used for controlling the power-on time and sequence of the magnetic field intensity detection pieces, the second control module is used for controlling the multi-channel analog switch to control the time and sequence of sending analog detection values to the analog-to-digital converter, and the first control module and the second control module operate in a matched mode. The magnetic field intensity detection pieces are powered on, so that analog detection values output by the magnetic field intensity detection pieces in the powered-on state are correspondingly sent to the analog-to-digital converter, only one or more magnetic field intensity detection pieces are in the powered-on state, and the other magnetic field intensity detection pieces are in the powered-off state. All magnetic field intensity detection pieces are prevented from being always in a power-on state, and the working power consumption of the keyboard is effectively reduced.

The invention provides a segmented double-Halbach magnetic field modulation type magnetic lead screw, an inner stator permanent magnet is of a Halbach magnetic flux gathering structure formed by splicing different segmented permanent magnet rings in four magnet magnetizing directions, an outer rotor permanent magnet is in a spiral shape, eight rows of frame bodies are arranged in the spiral shape, one segmented permanent magnet is embedded in each frame body, and the outer rotor permanent magnet is of a magnetic flux gathering structure. The segmented permanent magnets in the eight rows of frame bodies are arranged in two modes and distributed alternately, the first mode of arrangement is magnetizing towards the outer portion of the circle center, magnetizing towards the lower portion of the Z axis and magnetizing towards the upper portion of the Z axis, and the second mode of arrangement is magnetizing towards the inner portion of the circle center, magnetizing towards the lower portion of the Z axis and magnetizing towards the upper portion of the Z axis. And the segmented permanent magnets in two arrangements are sequentially and alternately distributed and spliced to form a Halbach magnetic flux gathering structure. Halbach arrangement is adopted on the external rotor, the manufacturing cost and difficulty are reduced, the thrust and torque performance is improved on the original basis, and a key effect is achieved in low-speed, high-thrust and long-distance application.

This invention relates to the field of micro motor technology, specifically proposing a dual-stator obliquely magnetized axial flux permanent magnet motor and its driving method. The permanent magnet motor includes a rotatable rotor assembly and two stator assemblies symmetrically arranged on both axial sides of the rotor assembly. The rotor assembly includes obliquely magnetized permanent magnets. The stator assembly includes a first coil and a second coil that are concentrically arranged, wound in opposite directions, and connected in parallel. Its advantages are: The dual-stator obliquely magnetized axial flux permanent magnet motor disclosed in this invention adopts a dual-stator structure combined with a dual-coil reverse-wound parallel design. When energized, the two coils can generate a superimposed magnetic field in the same direction, significantly improving the air gap magnetic flux density and torque density. The rotor assembly uses obliquely magnetized permanent magnets, and the axial components of the permanent magnets on both sides cancel each other out, reducing the axial force on the bearings and extending the motor's lifespan.

A ceiling module comprising a panel comprising a perimetric edge; and at least one magnet having a magnetic field and comprising a magnetic axis extending from a north pole to a south pole, the at least one magnet coupled to the panel adjacent the perimetric edge to allow the least one magnet to adjust orientation relative to the panel while remaining coupled to the panel, wherein the magnets are located at predetermined locations on the panel so that the magnetic field interacts with a separate magnetic field located adjacent to the perimetric edge, the magnet adjusts orientation so that the magnetic axis of the magnet aligns with the separate magnetic field while remaining coupled to the panel.

The application belongs to the technical field of permanent magnet motor modeling, and discloses a mathematical modeling method of an asymmetric interior permanent magnet motor, which specifically comprises the following steps: considering that the permanent magnet axis of the asymmetric interior permanent magnet motor is ahead of the maximum reluctance axis by 45 degrees of electric angle, selecting the permanent magnet axis as a reference direct axis, and establishing an air gap distribution function of the asymmetric interior permanent magnet motor; according to the air gap distribution function, successively establishing winding magnetic potential, magnetic density and flux distribution functions under the action of A-phase, B-phase and C-phase currents, and calculating an inductance matrix of the asymmetric interior permanent magnet motor; performing park transformation on the motor model in a three-phase coordinate system to obtain a mathematical model of the asymmetric interior permanent magnet motor in a corresponding dq coordinate system. The application realizes the establishment of the mathematical model of the asymmetric interior permanent magnet motor considering the magnetic axis offset, and provides a model basis for the control method design and operation performance analysis of the asymmetric interior permanent magnet motor with improved torque component utilization.

This moving body holding mechanism comprises: a moving body (11) provided with a first magnet (3); and a base (21) on which a guide mechanism for guiding the moving body (11) in an R direction is configured between the base (21) and the moving body (11), and which is provided with a second magnet (4). The magnetic axes of the first magnet (3) and the second magnet (4) are arranged along the R direction. The guide mechanism guides the first magnet (3) at least to a first position (P1) at which different poles are arranged close to each other with respect to the second magnet (4) in the R direction, and to a second position (P2) at which the same poles are arranged close to each other with respect to the second magnet (4) in the R direction.

This utility model discloses a sensing module and a magnetic axis keyboard. The sensing module includes a substrate and a Hall effect assembly. The substrate has a facing portion, and the Hall effect assembly includes at least three first Hall elements evenly disposed on the substrate, with the at least three first Hall elements uniformly arranged around the axis of the facing portion. With this structure, after the sensing module is assembled onto the magnetic axis keyboard, the facing portion is directly below the magnet. The at least three first Hall elements uniformly arranged around the axis of the facing portion are also uniformly arranged around the axis of the magnet. Therefore, the at least three first Hall elements of the Hall effect assembly can form a multi-point collaborative detection network. Thus, the magnetic axis keyboard's processing system can accurately identify whether the magnet is in a tilted pressing state rather than a vertical release state by comprehensively comparing the magnetic field change data of multiple first Hall elements, thereby greatly reducing or avoiding the occurrence of misjudgment of keycap release (disconnection of the pressing signal).

This utility model discloses a magnetic axis device with dual LED positions, including a circuit board, a lower cover disposed on the circuit board, an upper cover disposed on the lower cover, a shaft core disposed between the upper and lower covers, and a spring sleeved on the outside of the shaft core with its lower end pressing against the inside of the lower cover. The device is characterized by further including a magnet disposed at the bottom of the shaft core, a Hall sensor disposed on the circuit board and directly opposite the magnet, and RGB LEDs symmetrically disposed on the circuit board, whose light passes through the lower cover. The lower cover has light-relief grooves for the light from the RGB LEDs to pass through. This utility model provides a magnetic axis device with dual LED positions, which, without affecting the conduction of the key switches, allows the light to cover the entire axis through the dual-LED structure, greatly improving the uniformity and coordination of the lighting, ensuring the keyboard's lighting effect, and improving the user experience.

The utility model discloses a kind of Hall component and magnetic shaft keyboard of magnetic interference resistance, wherein, a kind of Hall component of magnetic interference resistance includes substrate, Hall element and shield case, substrate is provided with directly opposite part, Hall element and shield case are all located at the downside of directly opposite part, Hall element is located in shield case.In the above structure, after Hall component of the application is installed in magnetic shaft keyboard, shield case is used as physical barrier, the magnetic field generated by the magnet piece of target magnetic shaft (magnetic shaft is located on the upside of corresponding directly opposite part) can be guided, while the magnetic field generated by the magnet piece from adjacent magnetic shaft (whether static magnetic field or dynamic magnetic field) is blocked and weakened.This ensures that Hall element mainly senses the magnetic field change of corresponding magnet piece directly above, greatly reduces the possibility of interference caused by the action of adjacent magnetic shaft on current Hall element, therefore, it can greatly reduce or basically eliminate the problem of current Hall element false recognition, false response caused by adjacent magnetic field interference.

The utility model relates to a three-dimensional Halbach magnet for magnetic resonance, which belongs to the technical field of magnetic resonance, and comprises a two-dimensional Halbach magnetic steel combination which is a circular ring formed by enclosing n pieces of magnetic steel in a Halbach array, n being an even number greater than 2; the first three-dimensional Halbach magnetic steel combination and the second three-dimensional Halbach magnetic steel combination are arranged on the two sides of the two-dimensional Halbach magnetic steel combination respectively, each of the first three-dimensional Halbach magnetic steel combination and the second three-dimensional Halbach magnetic steel combination is a circular ring defined by n pieces of magnetic steel in a Halbach array, and n is an even number larger than 2; wherein the first three-dimensional Halbach magnetic steel combination and the second three-dimensional Halbach magnetic steel combination comprise inclined magnetic steel with a magnetic axial component. Compared with the prior art, the distribution curve of the magnetic field intensity on the central axis on the height H of the magnet is compressed into a peak shape, so that the central magnetic field intensity is improved, and the magnetic field non-uniformity is improved.

The application discloses a real-time coaxiality adjusting method for a three-dimensional suspension structure of a superconducting magnet, and relates to the field of superconducting magnet applications. First, the output result of an axial output device is combined, and then the position of the three-dimensional suspension structure is adjusted. Second, the adjusting method is divided into two stages: large-size adjustment in a loose state and small-size fine adjustment in a cold shrink state. The whole adjustment process is carried out in a vacuum environment. The three-dimensional suspension structure can bear the impact load of a three-level highway, and the adjusting method realizes secondary adjustment of the high coaxiality between the magnetic axis of the superconducting magnet and the axis of the output device after long-distance transportation, and realizes high-precision magnetic field output.